Footing pedestal design in Seismic Zones 2,3 & 4
Footing pedestal design in Seismic Zones 2,3 & 4
(OP)
Per UBC 1922.10.3 Structural plain concrete members are not permitted in Seismic Zones 2, 3 & 4.
UBC 1921.4.1 refers to "frame members". Is this refering to moment frame members only or does it include members of a braced frame structure?
Chapter 21 of ACI seems to only refer to moment frames.
I am designing a footing pedestal for a steel column of a braced frame structure and I want to be sure I follow the correct design procedure.
UBC 1921.4.1 refers to "frame members". Is this refering to moment frame members only or does it include members of a braced frame structure?
Chapter 21 of ACI seems to only refer to moment frames.
I am designing a footing pedestal for a steel column of a braced frame structure and I want to be sure I follow the correct design procedure.





RE: Footing pedestal design in Seismic Zones 2,3 & 4
RE: Footing pedestal design in Seismic Zones 2,3 & 4
Conventional design was my first inclination. However, based on conventional design the reinforcement ratio is less than .01 and UBC 1921.4.3.1 states that it shall not be less than .01 (That is if I fit into the criteria of that code, which leads back to my original question). Therefore, am I required to use a minimum of .01?
RE: Footing pedestal design in Seismic Zones 2,3 & 4
Having said all that, I would also think about how much you're saving by sharpening your pencil this much.